Abstract: Disclosed is a novel heater for a high-power hair dryer, comprising a frame consisting of at least two interlaced plate-like heat-resistant insulators and an electric heating wire wound on the frame; the electric heating wire winds around the frame from the upper part to the lower part; the tail of the frame is provided with at least two silicon-controlled rectifiers, each connected to different parts of the electric heating wire via a connecting lead; besides, all silicon-controlled rectifiers are connected in turn. Through configuring the silicon-controlled rectifiers and connecting the silicon-controlled rectifiers to different parts of the electric heating wire, stepwise control over the heat of the hair dryer is achieved, meeting multiple hair-dressing demands and making independent control over the wind power of the hair dryer and the heating temperature possible.

Abstract: Disclosed is an electric hair dryer with an LCD panel. A hair dryer housing is internally provided with a controller unit electrically connected to the LCD panel and a data acquisition system, a power system connected to an input power supply, a heating wire unit and a fan motor unit. The data acquisition system is installed inside the hair dryer housing, and the LCD panel is installed on the surface of the hair dryer housing. The heating wire unit and the fan motor unit are connected to the controller unit independently. A thermometer is installed at the front end inside the hair dryer housing, and a fan speed sensor is connected to the fan motor. The electric hair dryer employs the LCD panel and the data acquisition system to display the real-time data such as the air volume and the temperature, thus meeting multiple demands.

Abstract: The present utility model discloses an airflow concentrator for a hair dryer, comprising a base sleeved onto the air supply outlet of the hair dryer at the bottom, and a rolling mechanism, wherein two sets of through holes of positional correspondence are provided on the two sides of the top of the base, and the rolling mechanism mounted in the top of the base by the through holes can realize rolling movement. The beneficial effects are: the friction occurring when an airflow concentrator in the prior art is applied to long hair for styling and drying is improved; on one hand, the presence of a metal rolling mechanism can avoid the damage to the hair cuticle on the hair surface, on the other hand, the metal rolling mechanism can be easily heated by the hot air, and the repeated movement of the rolling wheel will achieve hair straightening and styling effect.

Abstract: Known attempts using engineered bacteria to produce P(3HB-co-4HB) with carbon sources that are structurally unrelated to 4-hydroxybutyrate resulted in relatively low 4HB monomer content of 1.5 to 5 mol %. The current invention provides recombinant hosts for producing P(3HB-co-4HB) wherein the plasmid including succinate semialdehyde dehydrogenase gene (sucD gene) and 4-hydroxybutyrate dehydrogenase gene (4hbD gene) further includes pyruvate decarboxylase promoter (Ppdc). It was found that the 4HB monomer content in P(3HB-co-4HB) is significantly enhanced to be over 20 mol %, in the range of 8.8 to 23 mol %.

Abstract: Known attempts using engineered bacteria to produce P(3HB-co-4HB) with carbon sources that are structurally unrelated to 4-hydroxybutyrate resulted in relatively low 4HB monomer content of 1.5 to 5 mol %. The current invention provides recombinant hosts for producing P(3HB-co-4HB) wherein the plasmid including succinate semialdehyde dehydrogenase gene (sucD gene) and 4-hydroxybutyrate dehydrogenase gene (4hbD gene) further includes pyruvate decarboxylase promoter (Ppdc). It was found that the 4HB monomer content in P(3HB-co-4HB) is significantly enhanced to be over 20 mol %, in the range of 8.8 to 23 mol %.

Abstract: Processes for the extraction of PHAs from biomass, said processes comprising: combining the biomass containing the PHAs with a single main solvent to form a biomass liquor; heating the biomass liquor to at least partially solubilize the PHAs from the biomass to form a PHA liquor; separating the biomass from the PHA liquor to form a PHA-enriched liquor; evaporating from 0% to about 50% of the single main solvent from the PHA-enriched liquor to form a solvent vapor and a concentrated PHA-enriched liquor; and cooling the concentrated PHA-enriched liquor to form precipitated PHAs and an impure solvent liquor. Optionally, further recovering the precipitated PHAs from the impure solvent liquor by filtration under pressure. A PHA-enriched liquor and a concentrated PHA-enriched liquor.

Abstract: Processes for the extraction of PHAs from biomass, said processes comprising: combining the biomass containing the PHAs with a single main solvent to form a biomass liquor; heating the biomass liquor to at least partially solubilize the PHAs from the biomass to form a PHA liquor; separating the biomass from the PHA liquor to form a PHA-enriched liquor; evaporating from 0% to about 50% of the single main solvent from the PHA-enriched liquor to form a solvent vapor and a concentrated PHA-enriched liquor; and cooling the concentrated PHA-enriched liquor to form precipitated PHAs and an impure solvent liquor. Optionally, further recovering the precipitated PHAs from the impure solvent liquor by filtration under pressure. A PHA-enriched liquor and a concentrated PHA-enriched liquor.